Honored ContributorHi,
I am using the Quartus web edition to program a DEO-Nano board. I intend to use the GPIO header of the board to send data to a DDS. I wanted to use Qsys to design it but I can't find the GPIO headers in the Library. Am I supposed to add a new component and if so, what details should I fill in the component type? I'm sorry if this is a trivial question, I am very new to Qartus (or FPGAs for that matter). Thanks!
Honored ContributorRun through these two example designs;
Post#2: de0_nano_basic.zip http://www.alteraforum.com/forum/showthread.php?t=39765 Post#2: de0_nano_sdram.zip http://www.alteraforum.com/forum/showthread.php?t=45927 This example contains a Qsys system and uses GPIO, so will have features similar to what you are looking for. In your case, where you want to communicate with a DDS, you will need to determine what the DDS interface protocol is, eg., is it a serial interface like SPI, or is it a parallel interface. If you have a part number, I can look at the data sheet and comment on what you would need to do. Cheers, DaveHonored ContributorDear Dave,
Thanks for the quick reply. I am using the AD9910 DDS and it has parallel interface. So to have my DDS output frequencies really fast, I want to transfer the data in parallel. This might be asking for a bit much, but do you happen to know any examples that I can look at to interface a DDS with an FPGA. Thanks!Honored Contributor
